Fixed so paste plugin uses VK.metaKeyPressed.
Fixed bug where empty inline elements would be created when toggling formatting of in empty block.
Fixed bug where applying styles on WebKit would fail in inline mode if the user released the mouse button outside the body.
Fixed so the inline editing toolbar will be rendered below elements if it doesn't fit above it.
Added new fixed_toolbar_container option that allows you to add a fixed container for the inline toolbar.
Merge branch '4.x' of https://github.com/tinymce/tinymce into 4.x